Content Provider
DataCite Metadata Store (German National Library of Science and Technology)
4,145
Directory of Open Access Journals: DOAJ Articles
2,403
Unknown
2,306
Arctic Data Center (via DataONE)
1,547
DataCite
1,285
Wiley Online Library
901
Zenodo
642
Alfred Wegener Institute for Polar- and Marine Research (AWI): ePIC (electronic Publication Information Center)
636
PubMed Central (PMC)
584
Archive ouverte HAL (Hyper Article en Ligne, CCSD - Centre pour la Communication Scientifique Directe)
480
Copernicus Publications: E-Journals
443
LeibnizOpen (The Leibniz Association)
434
Aarhus University: Research
393
Frontiers: Figshare
384
MDPI Open Access Publishing
369
University of Tromsø: Munin Open Research Archive
353
Université de Nantes: HAL-UNIV-NANTES
336
Arctic Council Repository
307
Institut national des sciences de l'Univers: HAL-INSU
306
PANGAEA - Data Publisher for Earth & Environmental Science
301
University of California: eScholarship
268
Niedersächsisches Online-Archiv NOA
263
Dryad Digital Repository (Duke University)
244
University of Copenhagen: Research
240
Springer Nature (via Crossref)
233
SciTec Connect (Office of Scientific and Technical Information - OSTI, U.S. Department of Energy)
229
RePEc (Research Papers in Economics)
223
University of Calgary Journal Hosting
192
LaCRIS - University of Lapland Current Research System
171
Defense Technical Information Center: DTIC Technical Reports database
170
HELDA – University of Helsinki Open Repository
164
Lund University Publications (LUP)
153
HAL Sorbonne Université
145
Natural Environment Research Council: NERC Open Research Archive
141
OceanRep (GEOMAR Helmholtz Centre für Ocean Research Kiel)
141
IOP Publishing
139
University of Alaska: ScholarWorks@UA
136
Wageningen UR (University & Research Centre): Digital Library
135
Université de Versailles Saint-Quentin-en-Yvelines: HAL-UVSQ
122
Cambridge University Press
121
Digital.CSIC (Spanish National Research Council)
117
Frontiers (Publisher)
117
Archives ouvertes de Paris-Saclay
116
Umeå University: Publications (DiVA)
116
Universitet i Oslo: Digitale utgivelser ved UiO (DUO)
107
OpenSky (NCAR/UCAR - National Center for Atmospheric Research/University Corporation for Atmospheric Research)
106
Canadian Science Publishing
104
International Arctic Research Center (IARC) Data Archive (via DataONE)
101
Oxford University Press
101
NTNU Open Archive (Norwegian University of Science and Technology)
98
more ...